The Aviary Effects API that helps developers create their own Instagram recently made the API public and updated its developer portal. In addition, the company is offering a short-term developer contest, so you'll need to get going quickly.

With over 6700 mashups in our directory, it's good to go back and look at previously reviewed categories to see what is new. Last year we looked at mashups that let users share their photos. Today, we'll go back and look at the latest mashups using photo APIs including Flickr; still the king of photo APIs.